Home / 13,755.22-18,989.70-10,371.30

Finding the Fourth Proportional to 13,755.22, 18,989.70 and 10,371.30

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Solution

The fourth proportional to 13,755.22, 18,989.70 and 10,371.30 is: 14,318.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.22 : 18,989.70 = 10,371.30 : x
  2. Step 2: Convert to fraction form
    13,755.22/18,989.70 = 10,371.30/x
  3. Step 3: Cross multiply
    13,755.22x = 18,989.70 × 10,371.30
  4. Step 4: Simplify right side
    13,755.22x = 196,947,875.61
  5. Step 5: Solve for x
    x = 196,947,875.61/13,755.22
  6. Step 6: Final answer
    x = 14,318.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.